Java实现插入排序

package Sort;import java.util.Arrays;public class InsertionSort {    public static int[] sort(int[] list) {        for (int i = 1; i < list.length; i++) {
            int x = list[i]; // 哨兵
            int j = i;
            while (j > 0 && x < list[j - 1]) {
                list[j] = list[j - 1];
                j--;
            }
            list[j] = x;
        }        return list;
    }    public static void main(String[] args) {
        int[] list = {5,4,3,2,1,6,8,7};
        System.out.println(Arrays.toString(sort(list)));
    }
}